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One prompt, five top language models — pick the best answer
5-column Gab AI Deck recipe for direct LLM comparison
LLM Showdown puts the same prompt in front of GPT-5.5, Claude 3.5 Sonnet, Gemini 2.5 Pro, o3, and Llama 3.3 simultaneously. You see the answers side by side; you make the call with evidence. Use it to pick a default LLM for an app, decide which model to ship on for an API, or simply settle the "which one is best" debate for a specific kind of work.
They span the major frontier families (OpenAI, Anthropic, Google, OpenAI reasoning, open-weights) and are the most-asked-about by users. Swap any column to a different model — Mistral, Command, Cohere, Grok — via the column header.
No — auto-scoring an LLM's output is hard to do reliably. The deck surfaces all five answers; you make the qualitative call. Add a sixth chat column to ask one model to evaluate the others if you want a meta-take.
Each column shows runtime in its header; cost depends on token count + per-model pricing. For systematic benchmarking, log prompts and outputs to your own analytics.
Yes — every column is a full conversation, not a one-shot. Continue the dialogue independently in each column to see how each model handles follow-ups.
Yes — paste an image into any vision-capable column (GPT-5.5, Gemini 2.5 Pro, Claude 3.5 Sonnet) and they will reason over it directly.
Llama 3.3 is included by default. Swap to Mistral, DeepSeek, or any other open-weights model the catalog supports via the column header.